| // Copyright 2022 The Tint Authors. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include "src/tint/writer/flatten_bindings.h" |
| |
| #include <utility> |
| |
| #include "gtest/gtest.h" |
| #include "src/tint/program_builder.h" |
| #include "src/tint/sem/variable.h" |
| #include "src/tint/type/texture_dimension.h" |
| |
| namespace tint::writer { |
| namespace { |
| |
| using namespace tint::number_suffixes; // NOLINT |
| |
| class FlattenBindingsTest : public ::testing::Test {}; |
| |
| TEST_F(FlattenBindingsTest, NoBindings) { |
| ProgramBuilder b; |
| Program program(std::move(b)); |
| ASSERT_TRUE(program.IsValid()) << program.Diagnostics().str(); |
| |
| auto flattened = tint::writer::FlattenBindings(&program); |
| EXPECT_FALSE(flattened); |
| } |
| |
| TEST_F(FlattenBindingsTest, AlreadyFlat) { |
| ProgramBuilder b; |
| b.GlobalVar("a", b.ty.i32(), builtin::AddressSpace::kUniform, b.Group(0_a), b.Binding(0_a)); |
| b.GlobalVar("b", b.ty.i32(), builtin::AddressSpace::kUniform, b.Group(0_a), b.Binding(1_a)); |
| b.GlobalVar("c", b.ty.i32(), builtin::AddressSpace::kUniform, b.Group(0_a), b.Binding(2_a)); |
| |
| Program program(std::move(b)); |
| ASSERT_TRUE(program.IsValid()) << program.Diagnostics().str(); |
| |
| auto flattened = tint::writer::FlattenBindings(&program); |
| EXPECT_FALSE(flattened); |
| } |
| |
| TEST_F(FlattenBindingsTest, NotFlat_SingleNamespace) { |
| ProgramBuilder b; |
| b.GlobalVar("a", b.ty.i32(), builtin::AddressSpace::kUniform, b.Group(0_a), b.Binding(0_a)); |
| b.GlobalVar("b", b.ty.i32(), builtin::AddressSpace::kUniform, b.Group(1_a), b.Binding(1_a)); |
| b.GlobalVar("c", b.ty.i32(), builtin::AddressSpace::kUniform, b.Group(2_a), b.Binding(2_a)); |
| b.WrapInFunction(b.Expr("a"), b.Expr("b"), b.Expr("c")); |
| |
| Program program(std::move(b)); |
| ASSERT_TRUE(program.IsValid()) << program.Diagnostics().str(); |
| |
| auto flattened = tint::writer::FlattenBindings(&program); |
| EXPECT_TRUE(flattened); |
| |
| auto& vars = flattened->AST().GlobalVariables(); |
| |
| auto* sem = flattened->Sem().Get<sem::GlobalVariable>(vars[0]); |
| ASSERT_NE(sem, nullptr); |
| EXPECT_EQ(sem->BindingPoint().group, 0u); |
| EXPECT_EQ(sem->BindingPoint().binding, 0u); |
| |
| sem = flattened->Sem().Get<sem::GlobalVariable>(vars[1]); |
| ASSERT_NE(sem, nullptr); |
| EXPECT_EQ(sem->BindingPoint().group, 0u); |
| EXPECT_EQ(sem->BindingPoint().binding, 1u); |
| |
| sem = flattened->Sem().Get<sem::GlobalVariable>(vars[2]); |
| ASSERT_NE(sem, nullptr); |
| EXPECT_EQ(sem->BindingPoint().group, 0u); |
| EXPECT_EQ(sem->BindingPoint().binding, 2u); |
| } |
| |
| TEST_F(FlattenBindingsTest, NotFlat_MultipleNamespaces) { |
| ProgramBuilder b; |
| |
| const size_t num_buffers = 3; |
| b.GlobalVar("buffer1", b.ty.i32(), builtin::AddressSpace::kUniform, b.Group(0_a), |
| b.Binding(0_a)); |
| b.GlobalVar("buffer2", b.ty.i32(), builtin::AddressSpace::kStorage, b.Group(1_a), |
| b.Binding(1_a)); |
| b.GlobalVar("buffer3", b.ty.i32(), builtin::AddressSpace::kStorage, builtin::Access::kRead, |
| b.Group(2_a), b.Binding(2_a)); |
| |
| const size_t num_samplers = 2; |
| b.GlobalVar("sampler1", b.ty.sampler(type::SamplerKind::kSampler), b.Group(3_a), |
| b.Binding(3_a)); |
| b.GlobalVar("sampler2", b.ty.sampler(type::SamplerKind::kComparisonSampler), b.Group(4_a), |
| b.Binding(4_a)); |
| |
| const size_t num_textures = 6; |
| b.GlobalVar("texture1", b.ty.sampled_texture(type::TextureDimension::k2d, b.ty.f32()), |
| b.Group(5_a), b.Binding(5_a)); |
| b.GlobalVar("texture2", b.ty.multisampled_texture(type::TextureDimension::k2d, b.ty.f32()), |
| b.Group(6_a), b.Binding(6_a)); |
| b.GlobalVar("texture3", |
| b.ty.storage_texture(type::TextureDimension::k2d, builtin::TexelFormat::kR32Float, |
| builtin::Access::kWrite), |
| b.Group(7_a), b.Binding(7_a)); |
| b.GlobalVar("texture4", b.ty.depth_texture(type::TextureDimension::k2d), b.Group(8_a), |
| b.Binding(8_a)); |
| b.GlobalVar("texture5", b.ty.depth_multisampled_texture(type::TextureDimension::k2d), |
| b.Group(9_a), b.Binding(9_a)); |
| b.GlobalVar("texture6", b.ty.external_texture(), b.Group(10_a), b.Binding(10_a)); |
| |
| b.WrapInFunction(b.Assign(b.Phony(), "buffer1"), b.Assign(b.Phony(), "buffer2"), |
| b.Assign(b.Phony(), "buffer3"), b.Assign(b.Phony(), "sampler1"), |
| b.Assign(b.Phony(), "sampler2"), b.Assign(b.Phony(), "texture1"), |
| b.Assign(b.Phony(), "texture2"), b.Assign(b.Phony(), "texture3"), |
| b.Assign(b.Phony(), "texture4"), b.Assign(b.Phony(), "texture5"), |
| b.Assign(b.Phony(), "texture6")); |
| |
| Program program(std::move(b)); |
| ASSERT_TRUE(program.IsValid()) << program.Diagnostics().str(); |
| |
| auto flattened = tint::writer::FlattenBindings(&program); |
| EXPECT_TRUE(flattened); |
| |
| auto& vars = flattened->AST().GlobalVariables(); |
| |
| for (size_t i = 0; i < num_buffers; ++i) { |
| auto* sem = flattened->Sem().Get<sem::GlobalVariable>(vars[i]); |
| ASSERT_NE(sem, nullptr); |
| EXPECT_EQ(sem->BindingPoint().group, 0u); |
| EXPECT_EQ(sem->BindingPoint().binding, i); |
| } |
| for (size_t i = 0; i < num_samplers; ++i) { |
| auto* sem = flattened->Sem().Get<sem::GlobalVariable>(vars[i + num_buffers]); |
| ASSERT_NE(sem, nullptr); |
| EXPECT_EQ(sem->BindingPoint().group, 0u); |
| EXPECT_EQ(sem->BindingPoint().binding, i); |
| } |
| for (size_t i = 0; i < num_textures; ++i) { |
| auto* sem = flattened->Sem().Get<sem::GlobalVariable>(vars[i + num_buffers + num_samplers]); |
| ASSERT_NE(sem, nullptr); |
| EXPECT_EQ(sem->BindingPoint().group, 0u); |
| EXPECT_EQ(sem->BindingPoint().binding, i); |
| } |
| } |
| |
| } // namespace |
| } // namespace tint::writer |